Products
Environmental Products
GypsanderTM - Gypsum-based neutral soil adjustment agent -

GypsanderTM is a gypsum-based soil adjustment agent that rapidly modifies sludge and soft soil at construction sites into a form that is safe and friendly to humans and other living things, contributing to soil recycling.
Product Type
Gypsander-C | Gypsander-C, chiefly composed of gypsum plaster, is an inorganic solidifier recommended for adjusting soil of relatively low water content. |
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Gypsander-B | Gypsander-B is a solidifier produced by combining polymer flocculant with Gypsander-C. Mud is solidified instantly by Gypsander-B. |
Strengths
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Strength 1Gypsum (a by-product of titanium dioxide) with improved functionality
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Strength 2Effective in various types of mud
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Strength 3pH neutral
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Strength 4Safe and environmentally friendly
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Strength 5Deodorant effect
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Strength 6Solidification time can be adjusted
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Strength 7Simultaneous solidification and modification without impairing the effects of insolubilizer and decomposer
Typical Applications
- Solidification, modification, and recycling of mud generated at construction sites
- Hardening of soft soil
- Cleanup of contaminated soil concurrently performed with solidification and modification of ground
Features
Effective in various types of mud.

pH neutral

As the product itself is pH neutral, so long as the original soil is neutral, the adjusted soil will surely be neutral no matter how much the product is added.
Safe and environmentally friendly
GypsanderTM is an environmentally friendly solidifier; leached amount and content are periodically measured and certified.
In addition, acute toxicity testing with Japanese rice fish has proven the product safe even in 100% test solution.
Deodorant Effect

GypsanderTM is mixed with special iron to reduce foul odor by solidifying hydrogen sulfide in dredged sediments, reducing work risk.
Soil containing high levels of organic substances can generate ammonia when alkalized, but this is not true of GypsanderTM, which creates no pH changes.
Soil containing high levels of organic substances can generate ammonia when alkalized, but this is not true of GypsanderTM, which creates no pH changes.
Technical Certificate

The Society of Materials Science, Japan